<template>
	<view class="u-wrap">
	
		<view class="u-menu-wrap">
			<scroll-view scroll-y scroll-with-animation class="u-tab-view menu-scroll-view" :scroll-top="scrollTop">
				<view v-for="(item,index) in tabbar" :key="index" class="u-tab-item" :class="[current==index ? 'u-tab-item-active' : '']"
				 :data-current="index" @tap.stop="swichMenu(index)">
					<text class="u-line-1">{{item.cate_name}}</text>
				</view>
			</scroll-view>
			<block v-for="(item1,index1) in tabbar[current].children" :key="index1">
				<scroll-view scroll-y class="right-box" v-if="current==currentRight">
					<view class="page-view">
						<view class="cate">
							<view class="cate-item"  @click="goGoodsLsit(item1.id)">
								<view class="cateTwo">
									{{item1.cate_name}}
									
									
								</view>
									<image class="cate_img" :src="item1.pic" mode=widthFix></image>
							</view>
							
							</view>
							
						<!-- 	<view class="item-container">
								<view class="item-menu">
									<view class="name">
										{{item1.cate_name}}
									</view>
								<view class="computed">
									<view class="computed_btn reduce">
										-
									</view>
									<view class="computed_btn nums">
										0
									</view>
									<view class="computed_btn add">
										+
									</view>
								</view>
								</view>
								<view class="money">
									标洗配件说明
								</view>
								<!-- <view class="thumb-box" v-for="(item1, index1) in item.foods" :key="index1">
									<image class="item-menu-image" :src="item1.icon" mode=""></image>
									<view class="item-menu-name">{{item1.name}}</view>
								</view> 
							</view> 
						-->
						
						
					</view>
				</scroll-view>
			</block>
		
		</view>
		<view class="money_btn">
			<view class="money">
				已选：<text>标洗</text>
			</view>
			<button type="default">付款</button>
		</view>
	</view>
</template>

<script>
	
	export default {
		data() {
			return {
				old:[{
					 "name": "美食",
					 "foods": [
					     {
					       "name": "饮品",
					       "key": "饮品",
					       "icon": "https://cdn.uviewui.com/uview/common/classify/2/14.jpg",
					       "cat": 6
					     }
					     ]
					 }],
				tabbar: [],
				scrollTop: 0, //tab标题的滚动条位置
				current: 0, // 预设当前项的值
				currentRight:0,
				menuHeight: 0, // 左边菜单的高度
				menuItemHeight: 0, // 左边菜单item的高度
				
				uid:0,
				appointment_id:0
			}
		},
		computed: {
			
		},
		onLoad(options){
			console.log(options)
			this.uid = options.uid;
			this.appointment_id = options.appointment_id;
		},
		onShow(){
			this.$u.api.getCategory().then(res=>{
				console.log(res,'getCategory')
				this.tabbar=res.data
				console.log(this.tabbar,'this.tabbar')
			})
		},
		methods: {
			goGoodsLsit(id){
				console.log(id,'idid')
				let _this = this;
				uni.navigateTo({
					url: `/pages/goods_list/goods_list?id=${id}&appointment_id=${_this.appointment_id}&uid=${_this.uid}`
				});
			},
			getImg() {
				return Math.floor(Math.random() * 35);
			},
			// 点击左边的栏目切换
			async swichMenu(index) {
				if(index == this.current) return ;
				this.current = index;
				this.currentRight = index;
				// 如果为0，意味着尚未初始化
				if(this.menuHeight == 0 || this.menuItemHeight == 0) {
					await this.getElRect('menu-scroll-view', 'menuHeight');
					await this.getElRect('u-tab-item', 'menuItemHeight');
				}
				// 将菜单菜单活动item垂直居中
				this.scrollTop = index * this.menuItemHeight + this.menuItemHeight / 2 - this.menuHeight / 2;
			},
			// 获取一个目标元素的高度
			getElRect(elClass, dataVal) {
				new Promise((resolve, reject) => {
					const query = uni.createSelectorQuery().in(this);
					query.select('.' + elClass).fields({size: true},res => {
						// 如果节点尚未生成，res值为null，循环调用执行
						if(!res) {
							setTimeout(() => {
								this.getElRect(elClass);
							}, 10);
							return ;
						}
						this[dataVal] = res.height;
					}).exec();
				})
			}
		}
	}
</script>

<style lang="scss" scoped>
	.u-wrap {
		height: calc(100vh);
		/* #ifdef H5 */
		height: calc(100vh - var(--window-top));
		/* #endif */
		display: flex;
		flex-direction: column;
	}

	.u-search-box {
		padding: 18rpx 30rpx;
	}

	.u-menu-wrap {
		flex: 1;
		display: flex;
		overflow: hidden;
	}

	.u-search-inner {
		background-color: rgb(234, 234, 234);
		border-radius: 100rpx;
		display: flex;
		align-items: center;
		padding: 10rpx 16rpx;
	}

	.u-search-text {
		font-size: 26rpx;
		color: $u-tips-color;
		margin-left: 10rpx;
	}

	.u-tab-view {
		width: 200rpx;
		height: 100%;
	}

	.u-tab-item {
		height: 110rpx;
		background: #f6f6f6;
		box-sizing: border-box;
		display: flex;
		align-items: center;
		justify-content: center;
		font-size: 26rpx;
		color: #444;
		font-weight: 400;
		line-height: 1;
	}
	
	.u-tab-item-active {
		position: relative;
		color: #000;
		font-size: 30rpx;
		font-weight: 600;
		background: #fff;
	}
	
	.u-tab-item-active::before {
		content: "";
		position: absolute;
		border-left: 4px solid $u-type-primary;
		height: 32rpx;
		left: 0;
		top: 39rpx;
	}

	.u-tab-view {
		height: 100%;
	}
	
	.right-box {
		background-color: rgb(250, 250, 250);
	}
	
	.page-view {
		padding: 16rpx;
	}
	
	.cate {
		display: flex;
		margin-bottom: 30rpx;
		background-color: #fff;
		padding: 16rpx;
		align-items: center;
		border-radius: 8rpx;
		.cate-item{
			display: flex;
			// text-align: center;
			align-items: center;
			flex-direction: column;
			.cateTwo{
				width: 50%;
				text-align: center;
				font-size: 34rpx;
				font-weight: 700;
				margin-bottom: 20rpx;
			}
			.cate_img{
				width: 140rpx;
				height: 140rpx;
				border-radius: 50%;
				
			}
		}
		
		
		
	}
	
	.item-title {
		font-size: 26rpx;
		color: $u-main-color;
		font-weight: bold;
	}
	
	.item-menu-name {
		font-weight: normal;
		font-size: 24rpx;
		color: $u-main-color;
	}
	.item-container {
		padding: 12rpx 0;
		box-sizing: border-box;
		.item-menu{
			display: flex;
			justify-content: space-between;
			.name{
				font-weight: 700;
			}
			.computed{
				display: flex;
				justify-content: space-between;
				.computed_btn{
					
					width: 50rpx;
					height: 50rpx;
					line-height: 46rpx;
					border: 1px solid #999999;
					text-align: center;
					color: #666666;
					font-weight: 700;
					margin-left: 10rpx;
					
				}
				.nums{
					font-weight: normal;
				}
			}
			
		}
		.money{
			width: 300rpx;
			overflow: hidden;white-space: nowrap;text-overflow: ellipsis;
			color: #666666;
			margin-top: 10rpx;
		}
	}
	
	.thumb-box {
		width: 33.333333%;
		display: flex;
		align-items: center;
		justify-content: center;
		flex-direction: column;
		margin-top: 20rpx;
	}
	
	.item-menu-image {
		width: 120rpx;
		height: 120rpx;
	}
	.money_btn {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
		display: flex;
		padding: 16rpx 30rpx;
		background-color: #fff;
		justify-content: space-between;
		align-items: center;
	
		.money {
			flex: 3;
			text {
				font-weight: 700;
			}
		}
	
		button {
			flex: 1;
			font-size: 24rpx;
			padding: 12rpx 34rpx;
			background-color: #eb3626;
			color: #fff;
		}
	}
</style>
